Cartography of the bottom and biokenosis of the Alicante coastline (according the classification of Meinesz et al., 1983) The charts are drawn up at 1:5,000, 1:10,000 and 1:20,000 depending on the details of the area. The state of biokenosis is also evaluated, especially that of Posidonia oceanica, with an indication of the index of coverage and cartography of the damages caused by illegal trawlers.